The Moto Z is an Android phone with a new name that begins at the end of the alphabet, but is actually pioneering modular connectivity in a more robust way than its competitors.It's the world's thinnest phone at 5.19mm in so-called "thickness," and it feels really thin - that's not just another meaningless marketing stat. On the other hand, you shouldn't want it to stay that slim.There are a number of practical accessories, more than with the LG G5, that attach to its back. Everything from a predictable Mophie-like battery case to a more wild mini projector. Testing out the Moto Z and a handful of its accessories, I found a lot of potential behind the new smartphone.